Ceiling ventilation fan



FIG. 1 is a front perspective view of a ceiling ventilation fan of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a cross-sectional view thereof, taken along the line 8-8 in FIG. 2.

The broken lines illustrate portions of the ceiling ventilation fan and form no part of the claimed design. 

CLAIM We claim the ornamental design for a ceiling ventilation fan, as shown and described. 